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41c594ab RB |
1 | #ifndef _ASM_SMTC_MT_H |
2 | #define _ASM_SMTC_MT_H | |
3 | ||
4 | /* | |
5 | * Definitions for SMTC multitasking on MIPS MT cores | |
6 | */ | |
7 | ||
8 | #include <asm/mips_mt.h> | |
9 | ||
10 | /* | |
11 | * System-wide SMTC status information | |
12 | */ | |
13 | ||
14 | extern unsigned int smtc_status; | |
15 | ||
16 | #define SMTC_TLB_SHARED 0x00000001 | |
17 | #define SMTC_MTC_ACTIVE 0x00000002 | |
18 | ||
19 | /* | |
20 | * TLB/ASID Management information | |
21 | */ | |
22 | ||
23 | #define MAX_SMTC_TLBS 2 | |
24 | #define MAX_SMTC_ASIDS 256 | |
25 | #if NR_CPUS <= 8 | |
26 | typedef char asiduse; | |
27 | #else | |
28 | #if NR_CPUS <= 16 | |
29 | typedef short asiduse; | |
30 | #else | |
31 | typedef long asiduse; | |
32 | #endif | |
33 | #endif | |
34 | ||
35 | extern asiduse smtc_live_asid[MAX_SMTC_TLBS][MAX_SMTC_ASIDS]; | |
36 | ||
b3920590 RB |
37 | struct mm_struct; |
38 | struct task_struct; | |
39 | ||
41c594ab RB |
40 | void smtc_get_new_mmu_context(struct mm_struct *mm, unsigned long cpu); |
41 | ||
42 | void smtc_flush_tlb_asid(unsigned long asid); | |
43 | extern int mipsmt_build_cpu_map(int startslot); | |
44 | extern void mipsmt_prepare_cpus(void); | |
45 | extern void smtc_smp_finish(void); | |
46 | extern void smtc_boot_secondary(int cpu, struct task_struct *t); | |
39b8d525 | 47 | extern void smtc_cpus_done(void); |
41c594ab RB |
48 | |
49 | /* | |
50 | * Sharing the TLB between multiple VPEs means that the | |
51 | * "random" index selection function is not allowed to | |
52 | * select the current value of the Index register. To | |
53 | * avoid additional TLB pressure, the Index registers | |
54 | * are "parked" with an non-Valid value. | |
55 | */ | |
56 | ||
57 | #define PARKED_INDEX ((unsigned int)0x80000000) | |
58 | ||
fe56b954 RB |
59 | /* |
60 | * Define low-level interrupt mask for IPIs, if necessary. | |
61 | * By default, use SW interrupt 1, which requires no external | |
62 | * hardware support, but which works only for single-core | |
63 | * MIPS MT systems. | |
64 | */ | |
65 | #ifndef MIPS_CPU_IPI_IRQ | |
66 | #define MIPS_CPU_IPI_IRQ 1 | |
67 | #endif | |
68 | ||
41c594ab | 69 | #endif /* _ASM_SMTC_MT_H */ |